Constructing a tunnel crossection from conditional points

[laurent_delrieu]

Perhaps look here

How to model a tunnel section in rhino-grasshopper

Hi, everyone. I need help to model this kind of tunnel section in rhino and grasshopper. The problem I am having is that the section has different arcs related to different centres. So my goal is to model this section in a way that I can change the size of arcs changing the radius in grasshopper to obtain a different section for a future model. I am a new entry to this software and I don’t know how to do that. Is there anyone can show me and explain how to model it, please? Thank you for your…